Pekpettjal calendar



Nov. 20, 1928.

F. A. STEVENSON PERPETUAL CALENDAR Filed Nov. 1927 2 Sheets-Sheet 1 HU 311M W L MBM TUE-18 5 R E gwoento'u Patented Nov. 20, 1 928.

1 UNITED STA T ES 3 FAYE A. STEVENSON,

or LANCASTER, omo.

PERPETUAL CALENDAR.

Application filed November This invention. relates to improvements incalendars and particularly to those that are:

perpetual or continuous'in nature. I l 7 One object of this invention isto provide a calendar which will be easy to use and simple to adjust. II

Another object is to provide a novel device by means of whichthecalendar for different months in different years may be referred toeasily. a I 1 Another object of this invention is to provide a calendarof this nature which will'be so constructed that the calendar fordiiferent months will exhibit properly either thirty or thirty-one days.p v

In the accompanying drawings similar reference numbers designate similarparts. Figure l is a frontview' of this invention. Figure-2 is a sideview of the inner cylinderremoved from the outer shell'and with themovable part removed. H t

Figure 3 is a side view of the movable; part of the inner cylinderdetached from the cylinder. t I F igure l is a view of the side of themovable part as it would appear cut on the line H in Figure 3and openedout flat.

' Figure 5 is a View of the inner cylinder without the movable part asit would appear cut onthe line 55 in Figure 2 andopened outflat f IFigure 6 is a top view ofFigure'l.

Figure 7 is a front view of another form of my invention.

Figure 8 is aside view'ofthe inner cylinder removed from the outer.shell and with the movable part attached.

Figure 9 is a View ofthe movable part'as, it would appear cut on'theline 99 in Fig;

ure 8 and opened outflat. Figure 10 is a view of the inner cylinderwithout the movable part as it would appear cut on the line 99 of Fi outflat. y

Referring to the drawings in detail and particularly to the form of myinvention il-.

lustrated in Figures 1 to 6 inclusive. an outer shell 1 is provided withav number-opening 2 and a month opening 3. Revolvably posi- I tionedinside the'outer shell is an inner cylinder 4 provided with numerals 5arranged thereon sothat they will be adapted for eX- posure through theopening Qin the outer shell when the inner cylinder is revolved. Thenumerals 5 are 'arranged in consecumark or arrow 6 gure 8 and opened theouter shell.

2,1927. Serial No. 2so,4o4."

tive order from 1 to 31 inclusive as shown especially in Figure 5. Ayear-indicating is provided on the cylinder 4.

The inner cylinder 4 has a movable part 7 bearing legends denoting themonths of the year arranged on the sides so that they will be exposedthrough the slot 3 in the outer shell when the cylinder l is turned. Themovable part 7 is further provided on its top with year numerals 8 asshown in Figure 6;, A knob'9 is attached to with which the cylinder 4may be revolved when the movable part is pressed over the topof thecylinder. r

To use the-calendar the inner cylinder 4 is removed from theouter shell1 and'the movable part7 is t'urn'ed until the year-indicating mark 6points upward to the desired" yearnumerals 8 on the top of the movablepart. The movable part is then pressed down over the top of thecylinder4 and is held in place by friction. The cylinder is then placed insidethe outer shell. and re-] volved until the desired month legends areexposed through the 'month opening '3 in' the outer shell. The calendarfor month is then shown below in the opening 2 and below the names ofthe days of the week' which are preferably arovided adjacent the upperedge of the number'slot. To adjust the calendar for the next during theyear the inn until the proper month legend appears in the opening 3. j

For example. to set the calendar for October 1929 the movable part 7 isturned in relation tothe inner cylinder until'the yearindicating mark 6is pointing to the year numerals 1929 on the top of the movable themovable part 7- month or any month er cylinder is revolved outer shelland revolved until the month legend Oct appears in, the opening3 in Thecorrect calendar then appears below in the opening 2. I V g The leapyears are indicated by asterisks. During January and February of leapyears the inner cylinder must be revolved so that: the [special *Jan andF Feb month leg ends designated in this case with an asterisk as shownin Figure 5,,are exposed in place of the regular month legends Jan and."Feb. Although the year numerals 8 shown in Figure 6 on the top of themovable part 7 only extend from 1925 to 1947 the cala Inn turning themovable part space in relation to the inner each year and two spaces onleap years,

endar can be operated perpetually by simply 7 forward one cylinder forand therefore the year numerals maybe dispensed with or ignored in theoperation of the calendar. 1

In the form of my invention shown in Figures 7 to 10 inclusive, theouter-shell 10 is provided with an upper number opening 11 and a lowernumber opening 12. An upper month opening 13 is located close to the"number opening 11 and a .lower month opening 1st is located close tothenumber opening 12. An inner cylinder 15, revolvably positioned insidethe outer shell 10, is provided with an upper series of numerals 16arranged thereon so 'thatthey will beadapted for exposure through theupper number opening 11 and a lower seriesof numeralsl'? arrangedthereon so that they will be adapted for exposure through the lowernumber opening 12. The series of numerals 16 are arranged in consecutiveorder running from 1 to 31 inclusive and the series of numerals 17are'in consecutive order running from 1 to 30 inclusive, as shown'inFigure 10. V i

The inner cylinder is provided with a movable part 18 having legendsdenoting the months of the year arranged so that they will be exposedthrough the openings 13 and 1 1 when the inner cylinder is turned. Themovable part 18 is also-provided with year numerals 19. Slots 20 in themovable part are so positioned as to permit the numerals 16 and 17 to beexposed through them at the proper time to show the calendar forthemonths inthe openings 11 and 12. A row of small slots 21 are providedadjacent each of the year numerals 19 and a pin 22 is carried by theinner cylinder for insertion in any of these slots. 7

To use this form of my invention, the movable part is turned so that thedesired year numeral is over the pin 22 in the cylinder 15. The pin isthen inserted through the slot 21 adjacent the desired year numerals andthe calendar is thus set for that year. The inner cylinder 15 is thenplaced in the outer shell 10 and revolved so that the'desired monthlegend appears in one of the two month openings.

month will then be. exhibited in the number opening directly below themonth opening exhibiting the monthlegend.

The leap years are indicated'by an asterisk. For January and February onleap years the cylinder 15 is revolved so that the asterisk shown abovethe month legends Jan and 1 Feb will appear in the upper part of themonthopenings 13 and 14:. i c

This form of 'my invention usually ex hibits two months at a time and,except for the month of February, it always shows the The calendar forthat calendar with the exact number of monthly either thirty orthirtydays in each month, one,

In both forms of my invention it is seen that by turning theinnercylinder in one direction the months will be exhibited in properorder.The years are in numerical order and the calendar can be changed fromyear to' year by avery slight adjustment. Besides its use as a perpetualcalendar it is possible with this invention to refer easily to any datein pastor future years without making any calculations, ting thecalendar atthe desired year as explained above during that year can beobtained. The in terior of the calendar may be adapted for use as amoney bank or as a and the like.

It is obvious that certain changes maybe made in the shape, arrangementand details of my invention without sacrificing any of the advantages ordeparting from the scope of the subjoined claims.

Having thus described my invention, I

claim: I j, j

LA calendar comprising an outer shell having openings therein, acylinder revolvably positioned inside said outer shell provided withnumerals denoting days of the month arranged in numerical order and inspiralgroupmsaid numerals extending en tirely' around the cylinder,saidcylinder further adapted to carry legends months of the year, saidmonth numerals and month legends being soarrang'ed as'to be exposedthrough ,the said openingsin the outer shell when the cylinder isrevolved and so arranged as to be turned together in one continuousdirection in relation to the outer shell for exhibiting the monthlycalendars in proper order throughout the year,

"-2.11 calendar comprising an outer; shell having openings therein, acylinder revolv-- ably positioned inside said outer shell and providedwith numerals denoting days of the month arranged in numericalorder andin spiral groups, said numerals extending entirely around the cylinder,the numeral 1 in one group being arranged directly over the numeral 8int-he next group and providing perpendicular number groups, a movablepart carried by the saidcylinder provided with legends denoting themonths of the year, said month numerals and month legends being visiblethrough the said openings in the outer. shell when the (cylinder isrevolved, the movable part being adapted to be turned forthe distance ofone perpendicular numher group at'a time with relation to the cylinderfor changing from one year to another and both the-movable part and tliecylinderfor by simply setthe calendar for any month A holder for pencilsindicating the same direction in relation to calendars in proper orderthroughout the year.

3. Acalendar of the character described comprising an outer shell havingopenings therein, a cylinder revolvably positioned 1nside said outershell and provided with numerals denoting days of the month, a movablepart carried by'the cylinder provided" in relation to the cylinder forchanging the setting of the calendar fromone year to another, and boththe movable part and thecylinder adapted to be turned together inrelation ,to the outer shell for exhibiting the monthly calendars inproper order throughout the year.

LA calendar comprising an outer shell having month openings and numberopenings, each of said month openings being located adjacent one oft-henumber openings,

said outer shell having a group of characters indicating the days of.the. week arranged consecutively adjacent the number openings,

a revolvable cylinder positionedinside said outer shell and providedwith numerals 1ndi- 'cating, days. of the month, said monthnumeralsbeing in numerical order extending around the cylinder and belngvisible in the said n'umberopeningswhen the cylinder is revolved, saidcylinder adapted to carry legends indicating the months of the year,said month legends belng vislble 1n the month 0 enin 's when the clinder is re-v P e c volved and said month numerals and month legendsbeing so arranged as to be turned to gether intermittently in thesamedirection in relation to the outer shell to exhibit the monthlycalendars in'proper order throughout the year.

5. A calendar comprising an outer shell having an upper month opening,an upper number opening, a lower month opening and a lower numberopening, a group of characters indicating the days of the week arrangedconsecutively adjacent to the said number openings, a revolvablecylinder positioned inside the said outer shell provided with a seriesof numerals arranged in spiral groups running from 1 to 31 inclusiveadapted to appear through the upper number opening when the cylinder isrevolved, and said cylinder further provided with a second series ofnumerals. arranged in spiral groups running from 1 to 30 inclusiveadapted to appear through the lower number opening when the cylinder isrevolved, the numerals in both series indicating days of the month, amovable part carried by the cylinder and month provided with legendsdenoting the months of the year, said month legends being adapted to beexposed through the said month openings and to cooperate withthe monthnumerals in the adjacent number opening in-exhibiting the monthlycalendars in proper order when the cylinder is revolved,

the monthscontaining 31 days being adapted'to be exposed inthe-uppernumber" opening and the'monthscontaining 30 days being adapted to beexposed in the/lower number opening, said movable part further providedwith a series of year numerals arranged consecutively thereomthe'movable part being adapted to be turned in relation to the cylinder forchanging the setting of the calendarfrom one year to another.

6. A calendar comprising an outer shell having month openings and numberopen- 1ngs, 'each of said month openings being located adjacent one ofthe number openings, SiitlCl outer shell having a group of chai LIIacters'indicating the days of the Week arranged consecutively adjacentthe number openings, 'a crevolvable cylinder positioned inside saidouter shell and provided with numerals indicating days ofthe month, saidmonth numerals belng 1n numerical order and extending entirely aroundthe cylinder, and being visible in the said number openings when thecylinder is revolved, a movable part carried'by the cylinder providedwith legends indicatingthe months of the year, said month legends beingadapted to be ex posed through the said month openings and to cooperatewith-the month numerals in the adjacent number opening in exhibiting themonthly calendars in proper order throughout the year when the cylinderand movable part are turnedtogether intermittently mone continuousdirection, said movable part further prov ded with a/series of yeardesignations arranged thereon, saidmovable part being adapted to beturned step by step in relation to the cylinder for changing the settingof the calendar from one year to another.

7. A calendar comprising an outer shell having an upper month opening,an upper number opening, a lower month opening and a lower numberopening, a revolvable cylinder positioned inside the said outer shellprovided with a series of numerals arranged i in groups running from 1to 31 inclusive adapted to appear through the upper number opening whenthe cylinder is revolved, and said cylinder further provided with asecond series of numerals arranged in groups running from 1 to 30inclusive adapted to appear through the lower number opening when thecylinder is revolved, the numerals in both series indicating the days ofthe month, a movable part carried by the cylinder provided with legendsdenoting the months of the year, said month legends-behaving an uppermonth ing adaptedto be exposed through the said month openings andtocooperate with the month numerals in the adjacent number opening inexhibiting the monthly calendars in properorder when the cylinder isrevolved, the months containing 3l days being adapted to be exposed inthe uppernumber opening and-the months containing- 30 days bein' adaptedto be exposedinthe lower num. er opening, the movable part being adaptedto be turned in relation to the cylinder for changingthe setting of thecalendar from one year to another.

8. A calendar comprising an outer shell opening, an upper numberopening, a lower month opening and a lower number opening, a group ofcharacters indicating the-daysof the Week arranged consecutivelyadjacent to the said number openings, revolvable cylinder positionedinside the said outer shell provided with a series of numeralsarranged-in spiral groups running from -1 to 31 inclusive adapted toappear through the upper number opening When the cylinderisrevolved, andsaid cylinder further provided with a second series of numerals arrangedin spiral groups running from 1 to 80 inclusive adapted to appearthrough the lower number opening when the cylinder in both seriesindicating days of the month and extending entirelyaround the cylinder,

said cylinder carrying ineansfor indicating the months oft-he year, saidmonth indicating means be ng YlSlble in the month openings when thecylinder is revolved.

9. A1 calendar comprising an outershellhaving month openings and numberopen in s. each "of said month 0 oenin s-bein lo- I b b cated adjacentone of the number openings,

said outer shell having a group of characters indicating the daysof theweek arranged consecutively adj acent the number openings,

is revolved, the numerals a 'revo lvable cylinder positioned inside;said outer shell and provided Witlrnumerals in- .e

dicating days-of the month, saidlnonth numerals being in numericalorderand extendmg entirely around the cylinder and bemg visible in saidnumber openings'when the cylinder is'revolved, a movablepart carried bythe cylinderprovided with-means'for indicating the monthsof the year,said monthindicating means being adapted tobe exposed through the saidmonth openings and to cooperate with the month numerals in the side saidouter shell and PI'OVldQCLWltll numorals denoting days of the month,said numerals being arranged entirely around the cylinder in a. numberof spiral groups and in numerical order, the numeral 1 in one groupbeing arranged directly over the numeral-8 in the next: group, a movablepart carried by the cylinder provided with legendsvindieating the monthsof theyear, said'month legends being so arranged as to cooperate withthe month numerals in exhibiting the monthly calendars automatically inproper order When the cylinder and the movable part are turned togetherin one continuous direction throuhout the year, and said month legendsand month numerals being adapted to'be shifted in relation to each otherto change the: setting of the calendarffrom one year to another wherebythe calendar will be setlfor the entire year.

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